Vise



Sept. 10, 1946. G. J. MEQER 2,407,341 vIsE y Filed June 28, 1945 FIG.Z

vAVroRA/EY Patented Sept. 1946 n f UNITED STATES PATENT OFFICE,

W. "2,407,341", v 1 .A

George J. Meyer, Milwaukee, Wis. K Y Application June 28, 1943, Serial'No.f492,5l3

1 olaiin. (ci. s1'-33)" Y The present invention relates to vises, and has for-an object to provide an` improved vise of strong, durable'and inexpensive construction including jaw actuating means so arranged-as to minimize wear and avoid binding and distortion ofthe parts. 7. .f J Another object is to provide a vise having jaw actuating means of such character as to minimize lost motion and to insure prompt movement of the movable jaw of the vise when a screw shaft of the actuating means is turned.

A further object is to perfect details of construction generally.

The invention further consists in the several features hereinafter described and claimed.

In kthe accompanying drawing,

Fig. .l is a top plan view of a bench vise structed in accordance with the invention;

Fig. 2 is a longitudinal sectional elevation of the vise, taken on the line 2-2 of Fig. 1;

Fig. 3 is a transverse sectionalv elevation taken on the line 3 3 of Fig. 2;

Fig. 4: is a detail sectional elevationof a portion of the vise, taken on the same planeas Fig. 2; f ,1' v

Fig. 5 isa transversesectional elevation taken generally on the line 5-5 of Fig. 4;

Fig. 6 is a detail longitudinal sectional elevation of a vise body;

Fig. 7 is a rearend View of the vvise body, parts being broken away;

Fig. 8 is a perspective view of a bushing or nut member for the vise, and

Fig. 9 is a detail view of an auxiliary nut member.

In the drawing, |5.designates a vise body which is anged at its base for attachment to a bench or other support. lf desired, the vise body mayhave a conventional swivel mounting, not shown. A work-clamping jaw I6 is secured to the vise body and is here shown to have a detachable swivel connection therewith, the jaw being held in normal position by a removable pin I1. In some instances, the jaw may be integral with the vise body. Formed longitudinally through the body I5 is a horizontal passage or guide opening I8 of generally rectangular cross-sectional lshape having a flat bottom Wall |9. A forwardly projecting ledge is formed on the vise body and has a flat top Wall coplanar with the bottom wall of the passage I8.

A movable jaw 2| cooperates with the stationary jaw I6 and is secured to the front end of a shank or slide bar 22 of rectangular cross-section, the jaw 2| preferably being integral with the shank. The shank 22 Vslidablyv iits in the opening I8 in the vise body and is supported on the ledge 20. Longitudinally formed in the shank 22 'isja bore 23 which opensat the rear end of the shank and which communicates at its front end with a smaller. longitudinal bore 24 opening at the front end of the shank. A slot 25-formed longitudinally in the bottom of the shank communicates with the bore 23 and constitutes therewith-a downwardly opening channel. Y '-.Upstanding from the bottom wall I9 of the vise .tbody opening I8 is a central longitudinal rib orfange 26 integral with the vise body and having an enlarged tubular top portionor barrel 21.5' Ifidesiredfthe front-.end of the rib may extend onto the ledge 20 to reinforce the ledge. The tubular portion v21 has a relatively long horizontal bore-28 opening at the rear end thereof and communicating at'itsfront end with a short reduced forwardlyI opening'bore 29, thus formingV an` annular shoulder 30 at the junction of these bores. rlhe axis of the bore 29 is aligned with the axis of the bore 24 in the slidable shank 22 'and is spaced above the'axis ofthe bore728.

vFitting in the bore 28 is a relatively long, eccentrihut-.forming 'bushing 3|. having a screwethreaded opening 32 aligned withthe bores v 24 and 29. The front end of the bushing abuts against` the shoulder 30 and the rear end has a downwardly projecting ear 33 which abuts against the vertical rear face of the rib 26, the ear having an opening 34 to receive a screw. 35 which is engaged in a screw-threaded opening 36 formed in the rear end of the rib. The bushing 3| is also shown to have a lug 31 which fits in a groove 38 formed in the rib 26 at the rear end of the bore 28. If desired, the tubular part 21 may havea top pad 21 at its rear end against which the wall of the shank bore 23 is adapted to slidably bear.

A rotable screw-threaded rod or shaft 39 extends through the bore 24 in the movable jaw shank 22 and the bores 28 and 29 in the vise body, and is engaged in the nut-forming bushing 3|.

The screw shaft is confined against relative axial movement with respect to the movable jaw member in any suitable manner as by a collar 40 on the shaft bearing against the front face of the jaw n erating handle 44. The shaft has a buttress or Vsaw-tooth screw-thread the steep side of which faces forwardly so as to resist axial pressure on the screw when work is clamped in the jaws. This type of screw-thread presents relatively strong, long wearing teeth.

A non-rotatable auxiliary nut y45 is threaded on the screw shaft a short distance in front of the tubular part 21 which houses the nut-forming bushing 3|. rI'he auxiliary nut is urged forwardly by a resilient member such as a short coiled spring 46 surrounding the screw shaft and interposed between the nut and the tubular part, thus tending to open the vise jaws and taking up any play which may exist or later develop in the screwthreaded connection. The auxiliary nut and spring are protectively housed in the hollow shank 22 of the movable jaw, and the nut is held against rotation in any suitable manner as by means of a flat surface 4T thereon abutting against the flat upper edge of the stationary rib or flange 26. If desired, the nut may have a notch l48 in which the upper edge portion of the rib or web ts. The spring pressure remains approximately constant in all positions of the movable jaw.

The line of action of the spring is substantially coaxial with the screw shaft, thus avoiding any tendency to cause cooking or binding of the auxiliary nut, even though the nut is relatively short in its axial dimension.

In assembling the vise, the screw shaft 39 is first threaded through the auxiliary nut l45 a short distance and is then pushed forwardly to compress the spring 46 to the desired pressure, whereupon the screw shaft is engaged in the main nut or bushing 3|. The spring 46 is under suflicient pressure to move the slidable jaw outwardly when the screw is turned to release clamping pressure on the jaws.

The eccentric screw bushing 3| permits the screw shaft to be brought as high as possible in the jaw shank 22 while still providing ample metal in the bushing. The eccentric mounting of the bushing also tends to resist rotation of the bushing. Rotation of the bushing is further resisted by the screw 35 and the lug 31. The bushing can readily be replaced if it should become worn after long service.

When the vise is in use, the rotation of the screw shaft 38 in one direction will displace the rection releasing the clamping pressure, the

spring-pressed nut 45 takes up al1 play in the screw-threaded connection regardless of the extent of wear, thereby promptly moving the slidable jaw and avoiding lost motion at the handle 44.

While one specific embodiment of the invention has been shown and described, it will be understood that changes and modifications may be made therein within the spirit of the invention.

What I claim as new and desire to secure by Letters Patent is:

A vise comprising a vise body having a jaw, a shank slidably guided by said vise body and having a jaw cooperating with said first-named jaw, said shank having a longitudinally extending channel therein, a rotatable screw shaft extending longitudinally in said shank and conned against relative axial movement with respect to said shank, said vise body having an integral longitudinal flange extending upwardly into the channel of said shank, a nut carried by the upper portion of said flange, said screw shaft being engaged with said nut for effecting displacement of the movable jaw7 a second nut engaged on said shaft in front of said first-named nut and restrained by the forward portion of the flange against rotation, and a spring extending about said shaft and interposed between said nuts for urging said second nut in a forward axial direction tending to open the movable jaw, said second nut and spring being housed in Said channeled shank.

GEORGE J. MEYER. 

